Willi Bloess 
Milestones of Art: Keith Haring: Next Stop Art [EPUB ebook] 

At the end of the 1970s, Keith Haring decorates the walls of the subway tunnels in New York with simple, two-dimensional characters. His tag is ‘The Radiant Child.” In contrast to the graffiti scene, which consists of little more than repetitions of such tags, Keith develops a diverse language of symbols. They seem to be mystic messages. In 1990 Haring dies, aged 31, from AIDS.